Breast Augmentation from C to DDD or E?

This is something that will need to be determined with an in person consultation. It is best to seek the opinion of a qualified professional when determining which size of implant will be best for you. Under the guidance of a board certified plastic surgeon they can help you achieve the look you are hoping for. All the best. 

You are taller than average, and you are wanting to be quite large, so you are are going to need a large implant. Silicone has the advantages of feeling more natural and has less risk of rippling or wrinkling. I recommend trying on the implants with a sports bra to help you determine the final size. Good luck!